86685 ÷ 8 = 10835 R5
We're going to perform division on 86685 with 8 as the divisor.

Step 1:
8 goes into 8 1 times with a remainder of 0.
Write down 1 as next digit of of the result. 
Result so far: 1
Subtract 8 from 8 to get 0.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 8

Step 2:
8 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of of the result. 
Result so far: 10
Subtract 0 from 6 to get 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 8

Step 3:
8 goes into 66 8 times with a remainder of 2.
Write down 8 as next digit of of the result. 
Result so far: 108
Subtract 64 from 66 to get 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 8

Step 4:
8 goes into 28 3 times with a remainder of 4.
Write down 3 as next digit of of the result. 
Result so far: 1083
Subtract 24 from 28 to get 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 8

Step 5:
8 goes into 45 5 times with a remainder of 5.
Write down 5 as next digit of of the result. 
Result so far: 10835
Subtract 40 from 45 to get 5.

The final result is 10835 with a remainder of 5.